Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver

WANG Xian-yi; SUN Yue-qiang; DU Qi-fei; BAI Wei-hua; WU Di; WANG Dong-wei

doi:10.3969/j.issn.0372-2112.2012.10.005

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Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver

更新时间：2025-07-16

- Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver
- Acta Electronica Sinica Vol. 40, Issue 10, Pages: 1938-1942(2012)
- 作者机构：
  
  1. 中国科学院空间科学与应用研究中心,北京,100190
  2. 中国科学院研究生院,北京,100049
  3. 中国科学院空间科学与应用研究中心,北京,100190
  4. 中国科学院研究生院,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2012.10.005
  CLC： TN850.4
- Published：2012
- 稿件说明：
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WANG Xian-yi, SUN Yue-qiang, DU Qi-fei, et al. Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver[J]. Acta Electronica Sinica, 2012, 40(10): 1938-1942.
DOI：

WANG Xian-yi, SUN Yue-qiang, DU Qi-fei, et al. Dynamic-Aided L2P(Y) Tracking in Dual-Frequency GPS Receiver[J]. Acta Electronica Sinica, 2012, 40(10): 1938-1942. DOI： 10.3969/j.issn.0372-2112.2012.10.005.

摘要

双频接收机中对L2P(Y)信号的跟踪可以使用半无码方法.但由于半无码方法本身具有平方损耗

因此实际获得的L2P(Y)信号载噪比很低

对L2P(Y)信号跟踪环路的性能提出了更高的要求.文中提出了一种利用接收机动态辅助L2P(Y)码跟踪的方法

给出了环路的设计细节

并详细地讨论了影响环路性能的各个因素.通过计算机仿真

比较了动态辅助环路和未辅助环路的性能.仿真结果表明

使用动态辅助的L2P(Y)信号跟踪环路可以在更低的载噪比下进行有效跟踪.

Abstract

L2P(Y) signal tracking in dual-frequency receiver can be implemented by employing semi-codeless method.However

the actual L2P(Y) signal carrier to noise ratio is very low due to squaring-loss.As a result

higher performance requirements are needed for L2P(Y) signal tracking loop.This paper presents a way of using dynamic-aided L2P(Y) tracking.Loop design details are given

and the various factors affecting the performance of the loop are discussed in detail.The performances of the dynamic-aided loop and the none-aided loop are compared through computer simulation.Simulation results show that dynamic-aided method can track L2P(Y) signal in lower carrier to noise ratios effectively.

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